<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title></title>
    <script>
    function show(a, b, ...arg){
      alert(a);
      alert(b);
      alert(arg);
    }

    show(12,5,8,9,22,5,6,4);
    </script>
  </head>
  <body>

  </body>
</html>
